1242014155 has 8 divisors (see below), whose sum is σ = 1491787152. Its totient is φ = 992697888.

The previous prime is 1242014149. The next prime is 1242014161. The reversal of 1242014155 is 5514102421.

It is an interprime number because it is at equal distance from previous prime (1242014149) and next prime (1242014161).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1242014155 - 2¹⁹ = 1241489867 is a prime.

It is a super-2 number, since 2×1242014155² = 3085198322440728050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 108169 + ... + 119098.

It is an arithmetic number, because the mean of its divisors is an integer number (186473394).

Almost surely, 2^1242014155 is an apocalyptic number.

1242014155 is a deficient number, since it is larger than the sum of its proper divisors (249772997).

1242014155 is a wasteful number, since it uses less digits than its factorization.

1242014155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228365.

The product of its (nonzero) digits is 1600, while the sum is 25.

The square root of 1242014155 is about 35242.2211984432. The cubic root of 1242014155 is about 1074.9184448676.

Adding to 1242014155 its reverse (5514102421), we get a palindrome (6756116576).

The spelling of 1242014155 in words is "one billion, two hundred forty-two million, fourteen thousand, one hundred fifty-five".